Hob

Running AI locally has a reputation problem: before you ask your first question, you are expected to pick a model from a list of cryptic names, guess how many billions of parameters your RAM can survive, and learn a command-line incantation or two. Hob is a free, open-source desktop app for Mac, Windows, and Linux built to kill that ritual. It runs open-weight models like Gemma, GPT-OSS, and Qwen entirely on your own machine: no account, no subscription, and no chats leaving your computer. It works offline in the literal sense, so a plane, a cabin, or an internet outage changes nothing.

The setup is the product. Hob does not show you a model zoo and wish you luck: it inspects your computer, picks the best frontier open-weight model that fits your hardware, and sets everything up itself. The model is an implementation detail, the way a browser treats a rendering engine, so a MacBook Air and a workstation do not get the same brain. For anyone who bounced off local AI over a wall of cryptic filenames, this is the difference between a product and a homework assignment.

Two things keep this listing honest. First, the privacy story applies to the model and your chats: the moment you connect Gmail or a calendar, your data flows through those integrations again, by your own choice. Second, this project was two weeks old when we covered it, so expect rough edges and rapid change, and treat the "alternative to Claude and ChatGPT" framing as the vendor's ambition rather than a benchmark result: for the hardest reasoning tasks, frontier cloud models still tend to win.